Wise after the event: According to Morgan Stanley’s Counterpoint Global team, collective intelligence depends on three conditions: diversity of thinking, an effective method of aggregating information and incentives that reward participants for being right.

• Prediction markets generally satisfy these conditions, producing prices that can be more accurate than polls or individual experts.
• Under these conditions, the MS team found that attempted price manipulation is rarely durable.

Self-correcting mechanism; Traders seeking to force an election contract artificially higher or lower may move it temporarily. But other participants have an incentive to exploit the mispricing and push it back towards its proper level.

• “Overall, the research suggests that manipulation can move prices temporarily but the effect eventually wanes,” the report said.
• “Diversity breakdowns are difficult to sustain because the contracts are settled in a timely fashion.”

Islands in the stream: The findings offer reassurance about the resilience of the trading mechanism. But that does not resolve the more troubling question of what happens when someone attempts to manipulate the event determining the contract.

• The report cited two recent examples. One trader appeared to interfere with a weather station at Charles de Gaulle Airport in an effort to win a Polymarket contract on the temperature in Paris.
• Other participants apparently manipulated Spotify streams to influence a contract concerning the platform’s most-played song.
• “The prospect of making money also encourages the manipulation of outcomes,” the authors warned, adding that these incidents, “along with the manipulation of outcomes in sports, will be difficult to manage.”
• The issue is that a liquid market may be able to correct an irrational price, but it cannot correct a compromised weather reading, manufactured streaming total or manipulated sporting event once that result becomes the settlement source.

Weak as I am: The findings expose a potential weakness in the division of regulatory responsibilities. The CFTC oversees event contracts offered by DCMs while sports betting remains primarily the responsibility of state gaming commissions.

• Those state regimes commonly regulate permitted wager types, geolocation, minimum ages, advertising, responsible gambling, taxation and integrity monitoring.
• But a federally regulated prediction exchange offering a functionally similar sports contract currently sits outside much of that infrastructure.
• “The challenge is that the products they offer are starting to overlap, calling into question regulatory boundaries,” Morgan Stanley said.

To the winner, the spoils: The Morgan Stanley paper also raises questions about whether prediction market users should be viewed solely as financially sophisticated traders. The team pointed out that prediction markets are zero-sum: the benefits of their collective accuracy are not shared evenly among participants.

• A study cited by Morgan Stanley examined almost 600 million Polymarket trades between November 2022 and March 2026.
• It found that 69% of the platform’s 2.4 million users lost money. Among profitable customers, the top 1% captured 77% of gains and the top 10% took 96%.
• “The profits remain highly concentrated among a few bettors, and a large majority lose money when they wager,” the report concluded.

Net of safety: That is not proof of consumer harm: informed and sophisticated traders would be expected to outperform less-skilled participants. But it complicates the argument that the activity should be understood principally as collective forecasting.

• If most retail customers lose while a small number of professional or highly informed traders extract most of the value, then suitability, disclosures, customer segmentation and responsible gambling safeguards become legitimate compliance questions.

This thing is bigger than the both of us: Morgan Stanley did not prescribe a new regulatory settlement. It did, though, make clear that the existing boundaries are unstable, describing a “hodgepodge of regulatory oversight” and legal battles and warning that the position could change rapidly.

• The wisdom-of-crowds defense, therefore, cuts both ways. Prediction markets can be valuable forecasting tools precisely because their prices aggregate information efficiently.
• But preserving that value requires confidence in the participants, the trading process and, crucially, the integrity of the event being measured.
• The crowd may be capable of policing a bad price. It cannot necessarily police the world outside the exchange.

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